If I'm understanding you chaps correctly, then a use might just just be a string of copy text. For example I could want to do: 
```
{% include headline='Jekyll include parameters are here' strapline='Use them = EPIC WIN!' %} 
```
and from within the include:
```
<div class="somemodule">
<h1>{{ include.strapline }}</h1>
<p>{{ include.strapline }}</p>
</div>
```

I'd expect that to output:
```
<div class="somemodule">
<h1>Jekyll include parameters are here</h1>
<p>Use them = EPIC WIN!</p>
</div>
```

Hope that makes sense.